Question about Lexus LS 400

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1991 lexus LS400 car wont start and engine light does come on. took car in and they said it could by my ECM.they said i have no sprak and no noid could this be whats wrong?

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  • Anonymous Jan 04, 2009

    Timing on 1991 Lexus LS 400

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Yes the ECM can indeed cause these issues, if they (the shop who diagnosed it) replace it and it does no cure the problem then they just bought you a new ECM as they are not returnable.

Posted on Sep 23, 2008

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1 Answer

1991 lexus ls400 trac light comes on


Check to make sure that none of the wire harnesses are touching the exhaust manifold and that the fuses and bulbs are tight in their fixtures.

Jun 23, 2014 | 1991 Lexus LS 400

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Car will start to chugg and then die and sometimes wont start , engine light comes on when this starts happening


Get the vehicle scanned,there is error code stored in ECM,that code will tell what part exactly to look,for:----
But other then these for starting troubleshooting for these problem,

CAR NO START PROBLEMS:-----


It can be the issue with weak battery or faulty battery or if battery is ok,then its faulty starter causing the issue.


From start to end troubleshooting these problem i suggest you to click the link below and follow its procedure:-----



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http://technoanswers.blogspot.com/2012/11/what-to-do-when-car-turns-over-but-wont.html


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Car Starting Problems

http://whoisbyme.blogspot.in/2012/06/car-starting-problems.html


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1999 Chrysler Cirrus: 8 IGN Fuel Starter Fuse Blows?

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http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html


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http://www.howtorepairguide.com

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These will help.

Thanks.

Nov 28, 2012 | 2000 Pontiac Bonneville

1 Answer

Car doesn't respond when gas pedal is pushed when it is driven in hot weather; engine does not stall (1991 lexus ls400


I had the same problem with my 1992 LS400. My Lexus mechanic fixed it by replacing the MAF(Mass Air Flow).

This used to drive me crazy when the weather was hot.

Oct 25, 2010 | 1991 Lexus LS 400

2 Answers

My lexus ls400 1991 the two electri fan all time is on


Either the temperature sensor on the radiator, or the relay is bad.
Pull a wire off the temperature sensor on the radiator.
If it stops the fans, then the sensor is bad and the relay ok.

Jul 19, 2010 | 1991 Lexus LS 400

1 Answer

1993 Lexus Ls400 loss of power a 2500-3000rpm when you accelerate hard on the gas pedel, hower if you press down on the gas pedal slowly the power will increase all the way up to 6000rps with no power...


Wish I had an answer - sounds very much like a problem I am having with my '92 LS400. I have a parts car, and have changed out the ECM, fuel pump, injectors, fuel pilter, fuel pressure regulator, ran the can with exhaust unbolted (check for clogged CATs, checked out my timing belt for slippage amoung other things, and nothing works. I have no check engine light on. Do you?


Jun 30, 2010 | 1991 Lexus LS 400

1 Answer

My car starts but turns off rite away?


try the computer. known for going bad.

Jul 01, 2009 | 1991 Lexus LS 400

1 Answer

Ls400 indicator lights coming on


you need a new alternator

Nov 03, 2008 | 1991 Lexus LS 400

1 Answer

1991 lexus ls400 car wont start. got someone to look at it and they said it was the mass air sensor. got a used one car still wont start.


Well first run a self test on the computer for trouble codes,l then based on those codes you replace affected parts, but first does it have fuel pressure? how about spark?

Sep 20, 2008 | Lexus LS 400 Cars & Trucks

4 Answers

Dash lights


What is the light on my lexus ls400 that looks some what like a dome what does it mean

Aug 13, 2008 | 1991 Lexus LS 400

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